Rod support for reinforced concrete structures



Oct. 15, 1946.

r J. J. CASSIDY ROD SUPPORT FOR REINFORCED CONCRETE STRUCTURES Filed May15, 1944 2 Sheets-Sheet l 1NVENTOR 0a. 15, 1946. J. CASSIDYQ 2,409,342

ROD SUPPORT FOR REINFORCED CONCRETE STRUCTURES Filed May 15, 1944 2Sheets-Sheet 2 Patented Get. 15, 1946 ROD SUPPORT FOR REINFORCEDCONCRETE STRUCTURES Joseph J. Cassidy, Fort Wayne, Ind.

Application May 15, 1944, Serial No. 535,606

6 Claims. 1

This invention relates to rod supports for reinforced concretestructures such as for use in assembling rods in spaced arrangement overa floor or adjacent the walls of a form in which a body of concrete isto be invested, so the rods are sustained in definite predeterminedpositions during the setting period of the concrete body.

An object of the invention is to provide various preshaped parts thatare conveniently assembled at the situs toform supports for thereinforcing rods in any desired arrangement of spacing apart from eachother above a floor or within a form inwhich concrete is to be molded.

Another object of the invention'is to provide easily assembled parts forsecuring reinforcing rods firmly in any desired relative arrangement insuch manner as requires but few operations and tools.

A further object of the invention is to construct the parts so as to beapplicable selectively to reinforcing rods of various dimensions.

And a still further object of theinvention is to so construct the partsas to permit rapid assem blage of the reinforcing rods 'in any desiredspaced relationship with each other and position in the form in whichthe concrete is, to be molded.

Other objects and advantages of the invention appear in the followingdescription.

An illustrative embodiment of the invention is shown in the accompanyingdrawings, in which Fig. 1 is a fragmentary perspective view of anassemblage ofreinforcing rods, and supports for the rods arranged inconnectionwith spacers for the supports;

Fig. 2 is a fragmentary elevational view drawn to an enlarged scaleshowing a section of Fig. l on the line :ca: thereof;

Fig, 3 is atop plan view of one of the members of an adjustable claspfor holding a reinforcing rod;

Fig. l is a top plan view of another member of the clasp;

"Fig. 5 is a detail side elevational view of a modified form of theclasp;'

Fig; 6 is an end elevational view of the ture shown in Fig. 5, partly insection;

Fig. 'l is a perspective view of an adjustable stool for use where oneseries of reinforcing rods are supported in a plane above another seriesof rods; and

Fig. 8 is a side elevational view showing another modified form of theinvention, parts being in section.

struc- Ill consists of metallic strips |4I5 having perforations l6 madetherein at frequent intervals uniformly spaced apart from each other,constituting spacers; supports for securing the spacers in planessuitably distant from the floor A or Walls of a form, constitutingstools I1; and members constituting clasps l8that are mounted inconnection with the strips and stools by which reinforcing rods Iii-20are sustained in a selected definite arrangement.

The spacers preferably are made of fiat strips of metal suitable inlength to extend from one end to the other of the floor or form forreception of a concrete mixture, or from one side thereof to the otheras required.

The stools preferably areformed of sheet metal, shaped to have parallellegs 2! spaced apart from each other, having inturned shoulders 22 andterminal outturned feet 23, there being made a slot 24 in each foot forthe reception of a nail (not shown) or other means for securing the feetin place against the floor or wall of the form. The legs also haveoutwardly projecting prongs 25 for ahe reception of a binding wire whensuch is use The clasp preferably consists of two members 26 and 21, themember 26 consisting of a sliding plate 28 with an opening 29 thereinand provided with an upturned jaw 30 having a notch 30 and a downwardlyinclined prong 3| that projects from its outer face. The other member 21has a hat base 32 provided at one end thereof with an upturned jaw 33having a notch 33 and laterally projecting prongs 34. The major por tionof the base 32 is made sufficiently narrow as to be received withinitheopening 29 of the member 23 when the two members are assembled together,and permit longitudinal sliding movement of the plate 28relativethereto. Thus the opposing jaws 30 and 33 are readily adjustable towardand from each other upon sliding movement of the plate 28. The claspmembers are positioned upon the upper face of the corresponding spacerand the base 32 is secured in a selected position thereon by anysuitable means such as a bolt 35 that is applied through an opening 38in the base and through a selected one of the perforations It in thespace and also through the upper end of the corresponding stool ll. Inthis manner the member 21 of the clasp, the spacer and the stool arefirmly secured together, while the other member 26 is movable to permitadjustment of the jaws of the clasp toward and from each other toaccommodate reinforcing The illustrative embodiment of the inventionrods of various diameters.

The stools 2| vary in height so the spacers and outturned bifurcatedends 40 and have outwardly projecting prong or hooks 4|. In thisinstance the stool 42 is similar to that shown in Fig. 2 and is securedin connection with a spacer l5 and the clasp 31 by means of a bolt 43.:,A rein-. forcing rod 44 is received betweenthe arms of the clasp bypressing it past the shoulders 39 and is further secured in place bymeans of a .wire 44' that is looped around the prongs 4| and drawnthrough the slots 45 of the bifurcated ends and finally entwined aboutthe extremities of the arms.

In Fig. 8 is illustrated a form of the invention in which there isprovided a stool TI and spacer 12 similar to those shown in Fig. 1. Inthis instance a -U-shaped chair Z3 i secured in connection with thespacer and the stool by means of a bolt 14. The arms 15 of the chairhave outwardly extending spurs 16 that have locking engagement with anoverlying clasp T! when placed astride the top of the chair, there beingprovided latch openings 18 in the arms of the chair for reception of thespurs. In this form of the invention a reinforcing bar (not shown) isplaced in the chair between the arms thereofand is held therein byapplying the clasp TI to the chair.

In some instances it is desirable to support a group of reinforcing rodsarranged in planes above another group or at various elevations. Forthis purpose there is provided, a shown in Fig. '7, an adjustable highstool consisting preferably of a tubular post 19 having feet 80 at itslower end, its upper end portion being provided with a longitudinal slot8|, one wall of which has made therein notches 82. Within the post 19 ismovably disposed a prop 83 having a projecting pin 84 that isselectively received in the notches according to thevertical adjustmentof the prop in the post. On top of the prop is secured a suitablefixture 85 adapted to be connected with an overlying spacer strip 86 andclasp 81, by any suitable means such as a bolt 43 shown in Figs. 5 and6, or the bolt 35 shown in Fig. 2. The type of clasp used in connectionwith the adjustable high stool is immaterial, the clasp 81 being similarto that shown in Figs. 5 and 6 as exemplary. In this manner areinforcing rod 88 is supported in various selected elevations accordingto adjustment of the prop 83.

Operation In utilizing the invention, convenience is afforded bysupplying the artisan with stools, spacer strips, clasp and thefastening means therefor in suitable sizes and quantities necessary toconstruct the reinforcing fabrication required, so that the variousparts may be assembled together with the reinforcing rods completely onthe situs. Because of the particular construction of the stools, 'claspsand spacers, their connections with each other may be arranged so as topermit the reinforced rods to be spaced and held in various arrangementsupon the fioor or in the form in which the concrete mixture (not shown)is shaped. Thus, the tools and clasps are read ily connected in spacedrelation with each other and positioned on the floor or secured to thewalls of the form suited to the limitations of space afforded thereby asthe case may be.

Upon investment of the concrete mixture the complete assemblageincluding the stools, spacers, clasps and the connecting means therefortogether with the reinforcing rods supported thereby become imbeddedwithin the concrete mass to form a component part of the finishedconcrete structure.

Variations from the particular construction above disclosed may beresorted to by the exercise of skill in the art, without departure fromthe scope of the invention, and the following claims are intended to beinclusive of such variations.

What I claim-is'i '1. A'reinforcing rod support and spacer thereforconsisting of a stool having legs provided with outwardly extendingprongs and slotted feet for accommodation of a fastening means, aspacer, disposed on said stool, consisting of a metallic strip havingspaced apart perforations, a clasp having two interconnected members,one of which members consists of a sliding plate having an openingtherein and provided with an upturned jaw, and the other memberconsisting of a base disposed in the opening of said sliding plate andhaving another upturned jaw, said jaws being oppositely disposed andhaving slots and outwardly extending prongs for accommodation of abinding wire, and means for securing oneof said clasp members, spacerand stool together in definite positions relative to each other, andsaid sliding plat being movable to permit relative adjustment of saidjaws to accommodate therebetween reinforcing rods of various sizes.

2. A reinforcing rod support and spacer there- 40 for consisting ofa'stool having legs terminating with feet adapted to be secured to thefloor or wall of a form, a spacer supported on said stool consisting ofa metallic strip having spaced apart perforations, a clasp having twointerconnected members, one of which members consists of a plate havinga jaw, and the other member having a base on which said plate has guidedmovement and being provided with another jaw, said jaws having slots andoutwardly extending prongs for accommodation of a binding wire, andmeans extending through said base, a selected one of the perforations insaid spacer and through the stool to secure same-together in definitepositions relative to each other, the arrangement being such that bymovement of said plate said jaws are adjusted to accommodatetherebetween reinforcing rods of various sizes.

3. A reinforcing rod support and spacer therefor consisting of a stoolhaving legs terminating with feet adapted to be secured to the floor orwall of a form, a spacer supported on said stool consisting of ametallic strip having spaced apart perforations, a clasp provided withspaced apart arms having inturned shoulders and outwardly projectingprongs for accommodation of a binding wire, and means extending throughsaid clasp, a selected one of the perforations in said strip and throughsaid stool to secure same together in definite positions relative toeach other.

4. A reinforcing rod support and spacer therefor consisting of a stoolhaving members adapted to be secured to the floor or wall of a form, aspacer supported on said stool, a clasp disposed on said spacer oppositesaid stool adapted to engage and hold a reinforcing rod, and meansextending through said clasp, spacer and stool to secure same togetherin definite positions relative to each other.

5. In a reinforcing rod support and spacer therefor, a spacer consistingof a perforated strip, a stool to support said spacer, a member havingspaced apart arms to seat a reinforcing rod therebetween, a clasp havinglocked engagement with said arms to confine said rod in place, and

. means for securing said member and. stool tostools having membersadapted to be secured to the floor or wall of a form, a spacerconsisting of a perforated strip supported on said stools, claspsdisposed on said spacer opposite said stools respectively, adapted toreceive reinforcing rods, said clasps having upturned arms with notchedends and, provided with outwardly extending prongs, means connectingsaid ciasps and corresponding stools through selected perforations insaid strip, and a wire entwined through the notches in each ciasp aroundthe prongs thereon and over the reinforcing rods positioned therein.

JOSEPH J. CASSIDY.

